单词 | hemicyclic |
释义 | hemicyclicadj. Botany. Applied to flowers which have the parts arranged spirally in such a manner that the transition from one series to another (e.g. from petals to stamens) occurs at the completion of a turn of the spiral; also to those which have some parts arranged spirally (acyclic) and others in whorls (cyclic). ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having specific arrangement or number of member parts regular1760 decandrous1808 irregular1826 tetramerous1835 pentamerous1848 symmetrical1849 hexamerous1857 isomerous1857 octamerous1857 anisomerous1861 octomeral1871 hemicyclic1875 zygomorphic1875 zygomorphous1879 tetracyclic1880 heteromerous1882 heterocyclic1895 oligomerous1897 pleiomerous1898 decasepalous- 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 533 In hemicyclic flowers those members at least which are arranged in whorls may possibly be distributed symmetrically. 1878 W. R. McNab Bot.: Outl. Classif. Plants viii. 179 The flowers generally have the parts in whorls (cyclic). Sometimes they are wholly (acyclic) or partially spiral (hemicyclic). This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2018). < adj.1875 |
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